COLD AIR INTAKE SYSTEMSA Cold Air Intake is traditionally longer and in most cases extended behind the bumper cover so that it can ingest direct air that is both cooler and denser. In addition to more direct air, the longer plenum achieves higher torque gains as well as impressive horsepower figures. Depending on the complexity of the plenum route, the Fujita Cold Air Intake may come as a 1 piece or 2 piece intake system. Different diameters, filters, and bends are all key factors of the R&D process of each Cold Air Intake. The in-house Dynojet is the final judge of which intake configuration will make it to production. Air/Fuel ratios are also an important factor in testing the Cold Air Intake, ensuring that safe and near factory levels are maintained in order to not trip any electronic sensors on the vehicle.